Refrigerant Pressure Sensor / Switch: Service and Repair

REMOVAL

NOTE: It is not necessary to discharge the refrigerant system to replace the A/C pressure transducer.




1. Disconnect and isolate the negative battery cable.
2. Disconnect the wire harness connector (1) from the A/C pressure transducer (2).
3. Remove the A/C pressure transducer from the A/C liquid line (3).
4. Remove the O-ring seal (4) from the liquid line fitting and discard.

INSTALLATION

NOTE: Use only the specified O-ring as it is made of special material for R-134a. Use only refrigerant oil of the type required for the A/C compressor.




1. Lubricate a new rubber O-ring seal (4) with clean refrigerant oil and install it onto the liquid line fitting (3).
2. Install the A/C pressure transducer (2) onto the A/C liquid line. Tighten the A/C pressure transducer securely.
3. Connect the wire harness connector (1) to the A/C pressure transducer.
4. Reconnect the negative battery cable.